Wisconsin teen pleads guilty to lesser charge in Slenderman attack

Aug 21 (Reuters) - One of two Wisconsin girls accused of stabbing a classmate to please a fictional character named Slenderman on Monday pleaded guilty to a reduced charge.

Anissa Weier, 15, appeared in a Waukesha court on Monday to plead guilty to attempted second-degree homicide as a party to a crime with use of a deadly weapon, as part of a plea agreement, court records show.

She will proceed to trial on Sept. 11 only on the question of whether her mental condition should make her legally responsible for her actions.

Under the plea agreement, she will then spend 10 years either in prison or in a state mental hospital, depending on the outcome of the September trial, according to the Milwaukee Journal Sentinel newspaper.

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Anissa Weier is led out of the courtroom by a sheriff's deputy on Aug. 21, 2015 during the arraignment of the Slenderman stabbing trial in Waukesha County Court in Waukesha, Wis. The court entered a not guilty plea for them and moved to set a trial date in mid-October. (Michael Sears/Milwaukee Journal Sentinel/TNS via Getty Images)

Here Morgan Geyser is brought into court by a sheriff's deputy on Aug. 21, 2015 during the arraignment of the Slenderman stabbing trial in Waukesha County Court in Waukesha, Wis. The court entered a not guilty plea for them and moved to set a trial date in mid-October. (Michael Sears/Milwaukee Journal Sentinel/TNS via Getty Images)

LONDON, ENGLAND - OCTOBER 26: Yasmin Ouard poses as Slenderman from the series Mobile Hornets ahead of the MCM London Comic Con Expo at ExCel on October 26, 2012 in London, England. Visitors to the Comic Convention are encouraged to wear a costume of their favourite comic character and flock to the Expo to gather all the latest news in the world of comics, manga, anime, film, cosplay, games and cult fiction. (Photo by Dan Kitwood/Getty Images)

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Courtesy: WITI

Anissa Weier, accused of being involved in the stabbing of another girl related to the 'Slenderman' online story, is led into the courtroom on Thursday, Dec. 22, 2016 in Waukesha, Wis. (Michael Sears/Milwaukee Journal Sentinel/TNS via Getty Images)

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Neither Prosecutors nor Weier's attorney could immediately be reached for comment on Monday.

Weier and her friend, Morgan Geyser, were charged with attempted first-degree homicide in the May 2014 stabbing of their classmate in Waukesha, a Milwaukee suburb. All three girls were 12 at the time. The stabbing victim survived the attack.

After a sleepover with their classmate and friend, Weier and Geyser lured her into the woods and stabbed her 19 times with a kitchen knife, according to a criminal complaint.

The girls told investigators they stabbed her to impress Slenderman, a tall, creepy fictional bogeyman they insisted was real, the complaint said.

Geyser was also due in court on Monday for a status hearing, but her attorney, Donna Kuchler said in a phone interview that no plea agreement was in the works. Geyser is scheduled for trial in October, Kuchler said.

Weier's plea on Monday means that even if a jury finds her not guilty by reason of mental disease or defect she will not seek conditional release from a state mental hospital until July 2020, the Journal Sentinel reported.

If she is found guilty, prosecutors will recommend a sentence of 10 years in prison and 10 years of extended supervision, according to the paper.

(Reporting by Chris Kenning in Chicago; Editing by Patrick Enright and Matthew Lewis)